You're referring to a exploit or vulnerability patch related to YouTube and the Nintendo Switch's NSP (Nintendo Submission Package) file format.
Do NOT update via the Nintendo eShop. If you are banned or using emuMMC, this will fail. Look for a newly patched version of the updated NSP. 4. Ad Skipping Strategy youtube patched nsp fixed
In simple terms, a is a repackaged version of the YouTube homebrew app or the official client that has been: You're referring to a exploit or vulnerability patch